|Ecclesiastical Jurisdictions|Latin name|Type|Rite|Ecclesiastical Province|Established|Area (km2)|
|---|---|---|---|---|---|---|
|Baní|Baniensis|Diocese|Roman|Santo Domingo|8 November 1986|2,892|
|Barahona|Barahonensis|Diocese|Roman|Santo Domingo|24 April 1976|6,973|
|Dominican Republic|Reipublicae Dominicanae|Military Ordinariate|Roman|Immediately subject to the Holy See|23 January 1958|—|
|La Vega|Vegensis|Diocese|Roman|Santiago de los Caballeros|25 September 1953|4,919|
|Mao-Monte Cristi|Maoënsis–Montis Christi|Diocese|Roman|Santiago de los Caballeros|16 January 1978|4,841|
|Nuestra Señora de la Altagracia en Higüey|Higueyensis / a Domina Nostra vulgo de la Altagracia in Higüey|Diocese|Roman|Santo Domingo|1 April 1959|5,437|
|Puerto Plata|Portus Argentarii|Diocese|Roman|Santiago de los Caballeros|16 December 1996|2,700|
|San Francisco de Macorís|Sancti Francisci de Macoris|Diocese|Roman|Santiago de los Caballeros|16 January 1978|3,682|
|San Juan de la Maguana|Sancti Ioannis Maguanensis|Diocese|Roman|Santo Domingo|25 September 1953|7,476|
|San Pedro de Macorís|Sancti Petri de Macoris|Diocese|Roman|Santo Domingo|1 February 1997|2,588|
|Santiago de los Caballeros|Sancti Iacobi Equitum|Metropolitan Archdiocese|Roman|Santiago de los Caballeros|25 September 1953|6,391|
|Santo Domingo|Sancti Dominici|Metropolitan Archdiocese|Roman|Santo Domingo|8 August 1511|4,033|

Question: how many dioceses were established before 1978?
Answer: 7